<html>
<head>
<title>订单系统</title>
</head>
<body>

  <form action="/order" method="post">
    <input type="submit" name="order" value="入库">
    <input type="submit" name="order" value="出库">
    <input type="submit" name="order" value="查询">
  </form>

</body>
</html>